EP1541912A1 - Assemblage de piston avec étanchéité améliorée - Google Patents

Assemblage de piston avec étanchéité améliorée Download PDF

Info

Publication number
EP1541912A1
EP1541912A1 EP04106426A EP04106426A EP1541912A1 EP 1541912 A1 EP1541912 A1 EP 1541912A1 EP 04106426 A EP04106426 A EP 04106426A EP 04106426 A EP04106426 A EP 04106426A EP 1541912 A1 EP1541912 A1 EP 1541912A1
Authority
EP
European Patent Office
Prior art keywords
valve piston
valve
seal
piston
sealing lip
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP04106426A
Other languages
German (de)
English (en)
Other versions
EP1541912B1 (fr
Inventor
Erwin Kulmann
Karl Troltsch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Bosch Rexroth AG
Original Assignee
Bosch Rexroth AG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bosch Rexroth AG filed Critical Bosch Rexroth AG
Publication of EP1541912A1 publication Critical patent/EP1541912A1/fr
Application granted granted Critical
Publication of EP1541912B1 publication Critical patent/EP1541912B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K1/00—Lift valves or globe valves, i.e. cut-off apparatus with closure members having at least a component of their opening and closing motion perpendicular to the closing faces
    • F16K1/32—Details
    • F16K1/34—Cutting-off parts, e.g. valve members, seats
    • F16K1/44—Details of seats or valve members of double-seat valves
    • F16K1/443—Details of seats or valve members of double-seat valves the seats being in series
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16K—VALVES; TAPS; COCKS; ACTUATING-FLOATS; DEVICES FOR VENTING OR AERATING
    • F16K11/00—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves
    • F16K11/02—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit
    • F16K11/06—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements
    • F16K11/065—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members
    • F16K11/07—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides
    • F16K11/0712—Multiple-way valves, e.g. mixing valves; Pipe fittings incorporating such valves with all movable sealing faces moving as one unit comprising only sliding valves, i.e. sliding closure elements with linearly sliding closure members with cylindrical slides comprising particular spool-valve sealing means

Definitions

  • the present invention relates to a valve piston assembly comprising a valve piston and a gasket, wherein the valve piston has a valve plug seal receiving area possesses, which is associated with the seal in the assembled state, and the seal at least has an outer and an inner sealing lip.
  • the field of application of the invention relates to the field of valve spools, in particular in Valves with bistable valve characteristics.
  • valve piston seat and Sliding valves known to seal between the piston chamber and the pressure chamber and so on enable smooth operation of the valve.
  • These generally include two Sealing lips, wherein the inner sealing lip connects to the valve piston, whose provided valve piston seal receiving area is generally cylindrically shaped.
  • valve piston assembly comprising a valve piston and a seal
  • valve piston a Valve piston seal receiving area has that of the seal in the assembled state is assigned, and the seal has at least one outer and one inner sealing lip
  • the valve piston seal receiving area at least in the area that mounted in the Condition of the inner sealing lip is associated, having a truncated cone-like profile, wherein the diameter of the valve piston becomes smaller in the direction of the piston chamber, and the inner sealing lip in unassembled state so under prestress that it is in mounted state in abutment with the frusto-conical valve piston portion of the valve piston seal receiving area located.
  • valve piston faces the truncated cone in the direction of the piston space
  • Valve piston portion of the valve piston seal receiving area subsequent has end-face paragraph and that the inner sealing lip of the seal so dimensioned is that in the assembled state in a direction substantially parallel to the valve piston closes on the piston chamber side with the end-face shoulder. For this a better seat of the Seal on the valve piston reached, which increases the seal again.
  • a further preferred embodiment of the present invention is additionally characterized in that the valve piston moves in the direction of the pressure chamber after the truncated valve piston section subsequent cylindrical valve piston section and subsequently has a frontal paragraph, the inner Sealing lip of the seal is dimensioned so that it is in the assembled state in the substantially parallel direction over the entire cylindrical valve piston section extends and closes the pressure chamber side with the end-face paragraph. This also will the seat of the seal on the valve piston and thus increases the seal again.
  • a valve assembly according to the present invention is in valves, preferably in seat and Sliding valves can be used.
  • a preferred inventive method for producing a valve which is a Valve assembly according to the invention comprises is characterized in that it comprises the steps contains that first the valve piston is inserted into the valve seat, then the Seal is pressed into the valve piston and then the valve piston with Valve seat and seal is pressed into the valve body.
  • Fig. 1 shows a longitudinal section through a seat valve 1 with two valve piston assemblies according to an embodiment of the present invention
  • Fig. 2 shows an enlarged detail from Fig. 1 of the marked by "X" area.
  • To the valve piston 10 are respectively mounted two seals 20 which extend over a valve piston seal receiving area of the valve piston 10 extend.
  • This preferably includes a frustoconical Valve piston portion 30 and a cylindrical valve piston portion 35 (see Fig. 2).
  • the Seal 20 preferably extends along the valve piston 10 around it over the entire valve piston seal receiving area. It is - as basically known in the art - constructed as a kind of grooved ring and includes an inner Sealing lip 40 and an outer sealing lip 42.
  • the inner sealing lip 40 is in unassembled state so pretensioned (pre-pressing) that they are in the mounted state in abutment with the truncated cone-like valve piston portion 30 of the Valve piston seal receiving portion of the valve piston 10 is to underflow of pressurized fluid to prevent operation of the cylinder.
  • the inner pressed Sealing lip 40 close to the valve piston portion 30 at.
  • the valve piston has both piston chamber side as the pressure chamber side two Heels or projections 50 and 60.
  • the seal 20 closes both in the direction of Piston space 70 preferred - possibly with some play - with the paragraph 50 and in the direction the pressure chamber 80 preferably - with some play - with the paragraph or projection 60th from.
  • the Seat of the seal on the valve piston increased again.
  • valve piston arrangements of the seat valve 1 according to the invention are preferably so sixteen- and inserted into the seat valve 1, that initially the valve piston 10 in the Valve seat 100 introduced, and then the seal 20 mounted on the valve piston 10 becomes. Since the inner sealing lip 40 before under suitable bias / pre-pressing has been set, it is in the assembled state close to the valve piston seal receiving area, in particular, on the truncated conical valve piston portion 30 of the valve piston seal receiving area at. Subsequently, the valve piston 10 together with the Seal 20 and the valve seat 100 inserted into the seat valve 1.
EP20040106426 2003-12-10 2004-12-09 Assemblage de piston avec étanchéité améliorée Expired - Fee Related EP1541912B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE2003157553 DE10357553B4 (de) 2003-12-10 2003-12-10 Ventilkolbenanordnung mit verbesserter Abdichtung
DE10357553 2003-12-10

Publications (2)

Publication Number Publication Date
EP1541912A1 true EP1541912A1 (fr) 2005-06-15
EP1541912B1 EP1541912B1 (fr) 2007-08-08

Family

ID=34485275

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20040106426 Expired - Fee Related EP1541912B1 (fr) 2003-12-10 2004-12-09 Assemblage de piston avec étanchéité améliorée

Country Status (2)

Country Link
EP (1) EP1541912B1 (fr)
DE (2) DE10357553B4 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317367C (fr) *
FR768772A (fr) * 1933-04-05 1934-08-13 Knorr Bremse Ag Garniture de piston
US3287022A (en) * 1962-09-25 1966-11-22 Hoerbiger Ventilwerke Ag Device for sealing axially movable elements
DE2033058A1 (de) * 1970-07-03 1972-01-05 I V Pressure Controllers Ltd Dichtanordnung für ein Umsteuerventil mit Kolbenschieber
US4195849A (en) * 1979-02-15 1980-04-01 Caterpillar Tractor Co. Piston fluid seal mounting
DE2908631A1 (de) * 1979-03-06 1980-09-11 Knorr Bremse Gmbh Ventildichtung
US5865442A (en) * 1996-06-12 1999-02-02 Kurashiki Kako Co., Ltd. Lip-like seal

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1279393A (fr) * 1960-11-08 1961-12-22 Equip Machines Outils Soc Pour Appareil distributeur de fluide sous pression à commande par impulsions
JPH0615186Y2 (ja) * 1986-12-29 1994-04-20 エスエムシー株式会社 方向切換弁

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE317367C (fr) *
FR768772A (fr) * 1933-04-05 1934-08-13 Knorr Bremse Ag Garniture de piston
US3287022A (en) * 1962-09-25 1966-11-22 Hoerbiger Ventilwerke Ag Device for sealing axially movable elements
DE2033058A1 (de) * 1970-07-03 1972-01-05 I V Pressure Controllers Ltd Dichtanordnung für ein Umsteuerventil mit Kolbenschieber
US4195849A (en) * 1979-02-15 1980-04-01 Caterpillar Tractor Co. Piston fluid seal mounting
DE2908631A1 (de) * 1979-03-06 1980-09-11 Knorr Bremse Gmbh Ventildichtung
US5865442A (en) * 1996-06-12 1999-02-02 Kurashiki Kako Co., Ltd. Lip-like seal

Also Published As

Publication number Publication date
DE10357553B4 (de) 2006-02-02
DE10357553A1 (de) 2005-07-14
DE502004004561D1 (de) 2007-09-20
EP1541912B1 (fr) 2007-08-08

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